It's not that there are not issues but a lot of them can be overcome by adapting to them, knowing about them and playing into them. The mechanics are a lot less forgiving and require more of you then previously.
You can't play the current patch as you played the previous and last batch of patches. But it can be played and you can adjust and overcome those poverty and distress issues. The classic-medieval period is going to suck a bit as the AI powerspike mostly from settling and you just have to live thru that and build and prepare for the renaissance-industrial era when if you did it right will catapult you back into the game again.
I don't see how dropping difficulty will really help or change. Sure the AI will be somewhat more forgiving about your less then optimal play as it gets less bonuses but then you won't really improve or learn anything will you?
While I don't really follow him I have previously seen some, or quite a few, episodes and a lot of Fencka's issues are, or was, issues of his own creation. He is, or was, quite poor when it came to adapting to how the game changes. As I recall he was fairly good at doing war but he was quite poor at the empire building and management aspect of the game. Instead he played each and every game more or less as his previous game irregardless of settings and civilization. His game depended on the eternal war to solve his issues by conquest and when that broke down or wasn't possible his game broke down. He did, or does, the same things over and over again and gets surprised when he doesn't get the results he got in previous patches and then he whines about that or some aspect of the game not working as he thinks it should work.
I had a quick glance at one of the current episodes (Spain). It's hard to judge cause you don't know what he sees or does between episodes etc. But just from a glance he doesn't appear to have changed much. He has poor trading skills, he still doesn't appear to understand how the happiness system works, he works to many specialists, he wastes his gold buying units (which doesn't solve any of his empire issues), he builds buildings in the wrong order, he has a lot of religious issues (as Spain!) -- the entire religion is built around war but he completely missed the early war window and is now stuck behind peaceful and more powerful AIs (which he whines about), he refused to spread his religion as Spain and have some minor happiness issues from it. I might have missed some but that appear to be the state of his game.